There are a suite of Unix utilities for searching Bugzilla from the
command line. They live in the
contrib/cmdline directory.
There are three files - query.conf,
buglist and bugs.

These files pre-date the templatization work done as part of the
2.16 release, and have not been updated.

query.conf contains the mapping from
options to field names and comparison types. Quoted option names
are "grepped" for, so it should be easy to edit this
file. Comments (#) have no effect; you must make sure these lines
do not contain any quoted "option".

buglist is a shell script that submits a
Bugzilla query and writes the resulting HTML page to stdout.
It supports both short options, (such as "-Afoo"
or "-Rbar") and long options (such
as "--assignedto=foo" or "--reporter=bar").
If the first character of an option is not "-", it is
treated as if it were prefixed with "--default=".

The column list is taken from the COLUMNLIST environment variable.
This is equivalent to the "Change Columns" option
that is available when you list bugs in buglist.cgi. If you have
already used Bugzilla, grep for COLUMNLIST in your cookies file
to see your current COLUMNLIST setting.

bugs is a simple shell script which calls
buglist and extracts the
bug numbers from the output. Adding the prefix
"https://bugzilla.mozilla.org/buglist.cgi?bug_id="
turns the bug list into a working link if any bugs are found.
Counting bugs is easy. Pipe the results through
sed -e 's/,/ /g' | wc | awk '{printf $2 "\n"}'